Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 899043497a4b7b68be39545d689d0ac251f13defc9fac6ad22839beaf28cc069:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^